Horn Coupled Multichroic Polarimeters for the Atacama Cosmology Telescope Polarization Experiment

Abstract

Multichroic polarization sensitive detectors enable increased sensitivity and spectral coverage for observations of the Cosmic Microwave Background (CMB). An array optimized for dual frequency detectors can provide 1.7 times gain in sensitivity compared to a single frequency array. We present the design and measurements of horn coupled multichroic polarimeters encompassing the 90 and 150 GHz frequency bands and discuss our plans to field an array of these detectors as part of the ACTPol project.

References in corpus (2)

• CMBPol Mission Concept Study: Probing Inflation with CMB Polarization
• Infrared dielectric properties of low-stress silicon nitride

Cited by in corpus (14)

• Advanced ACTPol Cryogenic Detector Arrays and Readout
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• The Atacama Cosmology Telescope: CMB Polarization at $200<\ell <9000$
• Microwave Spectro-Polarimetry of Matter and Radiation across Space and Time
• Readout of two-kilopixel transition-edge sensor arrays for Advanced ACTPol
• Design and Deployment of a Multichroic Polarimeter Array on the Atacama Cosmology Telescope
• Designs for a large-aperture telescope to map the CMB 10X faster
• A chemically etched corrugated feedhorn array for D-band CMB observations
• BFORE: The B-mode Foreground Experiment
• Photon noise correlations in millimeter-wave telescopes
• Measuring Reionization, Neutrino Mass, and Cosmic Inflation with BFORE
• The Atacama Cosmology Telescope: Quantifying Atmospheric Emission above Cerro Toco
• SPECTER: An Instrument Concept for CMB Spectral Distortion Measurements with Enhanced Sensitivity
• A Design Method of an Ultra-Wideband and Easy-to-Array Magic-T: A 6-14 GHz Scaled Model for a mm/submm Camera